This verb follows the standard English past tense rule: simply add -ed to the base form.
Thorough is regular. It follows the Standard -ed rule.
Use past time markers: "Yesterday, she thoroughed to the store."
No. Use "did not thorough" (not "did not thoroughed").
The verb thorough follows the standard English past tense conjugation rule. When forming the past tense, thorough becomes thoroughed. This follows the Standard -ed pattern, which is one of the most common conjugation rules in English.
Understanding why thorough becomes thoroughed helps with spelling and pronunciation. This verb follows the standard English past tense rule: simply add -ed to the base form.
When using thoroughed in writing, remember that it functions as a past tense verb and typically appears with time markers like yesterday, last week, or ago. For example: "Yesterday, she thoroughed to the store." The past tense form does not change based on the subject — I thoroughed, you thoroughed, he/she thoroughed, we thoroughed, they thoroughed.